CN106541716B - A kind of nozzle emulation board and printing test method for test printing control system - Google Patents

Abstract

The invention provides a nozzle simulation board for testing a printing control system, comprising: a simulation nozzle signal interface, an FPGA, and an MCU; a simulation nozzle signal interface for receiving print data sent by the nozzle board of the printing control system; the FPGA is connected to the MCU respectively It is connected with the signal interface of the simulation nozzle to receive the test command of the MCU, and verify the print data received by the signal interface of the simulation nozzle according to the test command, and obtain the verification result; the MCU interacts with the FPGA, and generates a Send the server's test report. Also disclosed are a print test system and a print test method. In the present invention, there is no actual nozzle in the printing control system, and there is no need to connect the nozzle for actual inkjet printing. The relevant function verification of the nozzle simulation board truly reflects the current printing status, thereby verifying the correctness of data transmission and the cascading interfaces of the printing control system. Connectivity, with real-time, accuracy and efficiency.

Description

A nozzle simulation board and printing test method for testing printing control system

technical field

The invention relates to a nozzle simulation board for testing a print control system, a printing test system and a printing test method based on the nozzle simulation board.

Background technique

In inkjet printing technology, the digital control system undertakes the functions of command transmission and sending printing data, which is equivalent to the brain part of the entire printing machine. The digital control system generally includes CNC boards such as the main control board, nozzle board, and synchronous control board. Among them, the main control board is responsible for receiving the dot matrix data from the server for caching, and memory management, and sending the processed dot matrix data to the nozzle board by page; at the same time, it receives the encoder signal from the synchronization control board and the printing start of each page. The signal is processed and sent to the nozzle board. The nozzle board is responsible for receiving the data from the main control board, processing it into the printing data required by the nozzle board, and sending it to the nozzle to start printing. The synchronous control board is responsible for receiving the photoelectric signal and encoder signal from the outside, and generates the correct encoder signal and paper-to signal, which is the start signal of each page printing, according to the configuration of the system controller, and sends them to the corresponding main control board.

Before actual machine inkjet printing, the connectivity and accuracy of the entire CNC system needs to be tested. In the absence of nozzles and ink supply systems, virtual printing is generally performed. Virtual printing uses an internal clock signal to send print data to the nozzle board. Since there is no actual printing, this method cannot verify the accuracy of the transmitted data.

Contents of the invention

The present invention provides a nozzle simulation board for testing a printing control system, a printing test system and a printing test method based on the nozzle simulation board, which can pass the verification printing control system without an actual nozzle in the printing control system. The nozzle board of the system sends printing data, so as to know the correctness of data transmission of the printing control system and the connectivity of each cascading interface.

In the first aspect, the present invention provides a nozzle simulation board for testing the printing control system, which is characterized in that it includes: a simulation nozzle signal interface, FPGA, and MCU;

Among them, the simulation nozzle signal interface is used to receive the printing data sent by the nozzle board of the printing control system;

The FPGA is respectively connected to the MCU and the simulated nozzle signal interface, and is used to receive the test instruction of the MCU, and to verify the print data received by the simulated nozzle signal interface according to the test instruction, and obtain the verification result ;

The MCU interacts with the FPGA, and generates a test report for sending to the server according to the verification result.

Further, the nozzle simulation board also includes:

The nozzle power interface is used to receive the nozzle power voltage signal sent by the nozzle board;

Voltage testing equipment, used to test the sprinkler power supply voltage signal received by the sprinkler power interface;

The nozzle power interface is connected to the voltage testing equipment.

Further, the nozzle simulation board also includes:

The capacitive load is used to receive the sprinkler power supply voltage signal, store the sprinkler power received by the sprinkler power interface, and output the stored sprinkler power supply voltage signal after a predetermined time;

The voltage testing equipment is also used to test the nozzle power supply voltage signal output by the capacitive load;

The capacitive load is respectively connected to the nozzle power interface and the electrical equipment.

The nozzle power supply voltage signal is a nozzle driving voltage signal or a nozzle heating voltage signal.

In a second aspect, the present invention further provides a printing test system, comprising: a nozzle board, and further comprising: the nozzle simulation board, the nozzle simulation board being connected to the nozzle board.

In a third aspect, the present invention also provides a printing test method based on the nozzle simulation board, including:

The simulation nozzle signal interface receives the printing data sent by the nozzle board;

When the MCU detects that the simulation nozzle signal interface receives the print data, it sends a test command to the FPGA;

The FPGA verifies the print data according to the test command, and obtains a verification result.

Further, the method also includes:

The MCU generates a test report for sending the server according to the verification result.

Preferably, the FPGA verifies the print data according to the test command, and obtains a verification result, including:

Matching the print data with the preset verification data to obtain a verification result;

Wherein, the preset inspection data is preset data used to test the correctness of data transmission and the connectivity of the cascade interface of the printing test system.

Preferably, the MCU generates a test report for sending the server according to the verification result, including:

After the FPGA obtains the verification result, it sends verification end information to the MCU;

The MCU obtains the verification result from the FPGA according to the verification end information;

The MCU generates a test report for analyzing error causes according to the verification result.

Further, after the MCU generates a test report for analyzing the cause of the error according to the verification result, the method further includes:

The MCU reports the test report for analyzing the cause of the error to the server.

It can be seen from the above technical solution that the present invention does not have an actual nozzle in the printing control system and does not need to be connected to the nozzle for actual inkjet printing. The relevant function verification of the nozzle simulation board truly reflects the current printing status, thereby verifying the print control system. The correctness of data transmission and the connectivity of various connection ports are real-time, accurate and efficient.

Description of drawings

Fig. 1 is a schematic structural diagram of a nozzle simulation board for testing a printing control system provided by an embodiment of the present invention;

FIG. 2 is a flowchart of a printing test method provided by an embodiment of the present invention.

Explanation of reference signs

Simulation nozzle signal interface 1 data buffer 2 FPGA3 nozzle power interface 4 capacitive load 5 MCU6

Detailed ways

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

Fig. 1 shows a schematic structural view of a nozzle simulation board for testing a printing control system provided by an embodiment of the present invention,

A nozzle simulation board for testing the printing control system shown in Figure 1 includes: simulation nozzle signal interface 1, FPGA3, and MCU6; here, the simulation nozzle signal interface 1 is consistent with the actual nozzle signal interface specification.

Among them, the simulation nozzle signal interface 1 is used to receive the printing data sent by the nozzle board of the printing control system;

Said FPGA3 is respectively connected with said MCU6 and the simulation nozzle signal interface 1, and is used to receive the test instruction of said MCU6, and according to said test instruction, the printing data received by said simulation nozzle signal interface 1 is verified, and the calibration result is obtained. test results;

The MCU6 interacts with the FPGA3, and generates a test report for sending the server according to the verification result, thereby facilitating operations such as storage, query, and analysis of the test results,

In the present invention, there is no actual nozzle in the printing control system, and there is no need to connect the nozzle for actual inkjet printing, and the relevant function verification of the nozzle simulation board truly reflects the current printing status, thereby verifying the correctness of data transmission and the accuracy of each print control system in the printing control system. The connectivity of the cascade interface is real-time, accurate and efficient. Moreover, the nozzle simulation board has less hardware, which simplifies the hardware requirements on the premise of realizing the test function.

The MCU6 is connected to the server through a serial port for interaction.

In order to reduce the amount of data processing and improve efficiency. Further, the nozzle simulation board also includes:

Data buffer 2, used to buffer the print data received by the simulated nozzle signal interface 1;

The data buffer 2 is located between the simulation nozzle signal interface 1 and the FPGA3.

Referring to Fig. 1 again, in order to further test the power on and off of the nozzle power supply, thereby testing the correctness or normality of the nozzle power supply system, the nozzle simulation board also includes:

The nozzle power interface 4 is used to receive the nozzle power supply voltage signal of the nozzle board; the simulation nozzle power interface 4 here is consistent with the actual nozzle power interface specification.

Voltage testing equipment, used to test the sprinkler power supply voltage signal received by the sprinkler power interface 4;

The nozzle power interface 4 is connected to the voltage testing equipment.

The nozzle power supply voltage signal is a nozzle driving voltage signal or a nozzle heating voltage signal.

The voltage testing device can use a lamp, such as an LED lamp, where the power supply voltage should be greater than the lighting voltage of the lamp, so the power on and off of the nozzle power supply can be tested by whether the lamp is lit or not.

Still referring to Fig. 1, since the actual sprinkler power supply system contains capacitive loads 5 such as capacitors, in order to make the test closer to the real sprinkler power supply system and make the power supply test results more real and accurate, the sprinkler simulation board also includes:

The capacitive load 5 is used to receive the sprinkler power supply voltage signal, store the sprinkler power received by the sprinkler power interface 4, and output the stored sprinkler power supply voltage signal after a predetermined time;

The voltage testing equipment is also used to test the nozzle power supply voltage signal output by the capacitive load 5;

The capacitive load 5 is respectively connected to the nozzle power interface 4 and electrical equipment. The capacitive load 5 can be a capacitor.

Typically larger value electrolytic capacitors are used to simulate the capacitive load.

The invention also discloses a printing test system, which includes: a nozzle board, and further includes: the nozzle simulation board, and the nozzle simulation board is connected to the nozzle board.

Referring to Fig. 2, the present invention also discloses a printing test method based on the nozzle simulation board, the method is a printing test method of the printing control system, before the method, the following operations are performed:

When starting a printing test, set the printing parameters on the server, including the parameters of the printing test job, the frequency division and multiplication ratio of the encoder, and the printing resolution.

Then the main control board receives the encoder signal from the synchronous control board, and at the same time buffers and processes the received print data, and sends it to the nozzle board by page. After the print head board receives the print data, it processes the data format required by the print head and sends it to the print head simulation board;

Then carry out printing test method of the present invention, comprise:

S1. The simulated print head signal interface receives the print data sent by the print head board; the print data can be data within a preset period.

S2. When the MCU detects that the simulation nozzle signal interface receives the print data, it sends a test command to the FPGA;

S3. The FPGA verifies the print data according to the test command, and obtains a verification result.

In order to facilitate operations such as storing, querying, and analyzing the test results, the method further includes:

S4. The MCU generates a test report for sending the server according to the verification result.

As a preferred manner, S3, the FPGA verifies the print data according to the test command, and obtains a verification result, including:

Matching the print data with the preset verification data to obtain a verification result;

Wherein, the preset inspection data is preset data used to test the correctness of data transmission and the connectivity of the cascading interface of the printing test system, and is generally the preset correct printing data of the nozzle board.

Preferably, the S4, the MCU generates a test report for sending the server according to the verification result, including:

S41. After the FPGA obtains the verification result, it sends verification end information to the MCU;

S42. The MCU acquires the verification result from the FPGA according to the verification end information;

S43. The MCU generates a test report according to the verification result.

In order to facilitate operations such as storage, query, and analysis of the test results, further, after the S4, the MCU generates a test report according to the verification results, the method further includes:

S5. The MCU reports the test report to the server.

In the present invention, after the print head simulation board receives the print data received by the simulated print head signal interface, each bit of the print data is checked, and within a fixed period, if the check result is correct, a result is output, and if it is not correct, Then it is considered that the printing data is wrong, and an error bit is obtained, and a test report is generated from the test result and sent to the server, and the server analyzes the cause of the error in the data according to the test error bit.

In the present invention, when there is no actual nozzle in the printing control system and it is not necessary to connect the nozzle for actual inkjet printing, the relevant function verification of the nozzle simulation board truly reflects the current printing status, thereby verifying the correctness of data transmission and the accuracy of all levels of the printing control system. The connectivity of the connection port is real-time, accurate and efficient. Moreover, the method is simple and easy to implement, greatly simplifies the flow and hardware requirements of the system test, and improves the efficiency of the system test.

Those of ordinary skill in the art can understand that: the above embodiments are only used to illustrate the technical scheme of the present invention, rather than limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the claims of the present invention. range.

Claims (10)

1. a kind of nozzle emulation board for test printing control system, which is characterized in that including：Emulation spout signal interface, FPGA、MCU；

Wherein, spout signal interface is emulated, the print data that the shower plate for receiving print control system is sent；

The FPGA is connect with the MCU and emulation spout signal interface respectively, and the test for receiving the MCU instructs, and The print data of the emulation spout signal interface is verified according to the test instruction, obtains check results；

The MCU is interacted with the FPGA, and the test report for sending server is generated according to the check results.

2. nozzle emulation board according to claim 1, which is characterized in that the nozzle emulation board further includes：

Nozzle power interface, the nozzle power supply voltage signal for receiving shower plate transmission；

Voltage tester equipment, the nozzle power supply voltage signal received for testing the nozzle power interface；

The nozzle power interface connects the voltage tester equipment.

3. nozzle emulation board according to claim 2, which is characterized in that the nozzle emulation board further includes：

Capacitive load, for receiving the nozzle power supply voltage signal, the nozzle power supply received to the nozzle power interface is electric Pressure signal is stored, and the nozzle power supply voltage signal of storage is exported after the predetermined time；

The voltage tester equipment is additionally operable to test the nozzle power supply voltage signal of the capacitive load output；

The capacitive load is connected with the nozzle power interface and electrical equipment respectively.

4. nozzle emulation board according to claim 2 or 3, which is characterized in that the nozzle power supply voltage signal is nozzle Drive voltage signal or nozzle heater voltage signal.

5. a kind of printing test system, including：Shower plate, which is characterized in that further include：Described in any one of claims 1 to 4 Nozzle emulation board, the nozzle emulation board connects the shower plate.

6. a kind of printing test method based on the nozzle emulation board described in any one of claim 1 to claim 4, special Sign is, including：

Emulate the print data that spout signal interface shower plate is sent；

MCU sends test command when detecting the emulation spout signal interface print data, to FPGA；

The FPGA verifies the print data according to the test command, and obtains check results.

7. printing test method according to claim 6, which is characterized in that the method further includes：

The MCU generates the test report for sending server according to the check results.

8. printing test method according to claim 6, which is characterized in that the FPGA is according to the test command to institute It states print data to be verified, and obtains check results, including：

The print data and default verification data are matched, check results are obtained；

Wherein, the default verification data is the pre-set data transmission correctness for testing the print control system With the data of the connectivity of subtending port.

9. printing test method according to claim 7, which is characterized in that the MCU is generated according to the check results Test report for sending server, including：

After the FPGA obtains check results, verification ending message is sent to MCU；

The MCU obtains the check results according to the verification ending message from the FPGA；

The MCU generates the test report for analyzing error reason according to the check results.

10. printing test method according to claim 9, which is characterized in that the MCU is generated according to the check results After test report for analyzing error reason, the method further includes：

The test report for analyzing error reason is reported to server by the MCU.